package com.dencycheng.principle.openclose;

/**
 * @Author dencycheng
 * @Date 2020/2/16 16:10
 */
public class JavaCourse implements ICourse {
    @Override
    public Integer getId() {
        return null;
    }

    @Override
    public String getName() {
        return null;
    }

    @Override
    public Double getPrice() {
        return null;
    }
}
